Wind tunnel test model parallel mechanism support device for aircraft formation flight

Abstract

The invention relates to the technical field of wind tunnel tests, in particular to a wind tunnel test model parallel mechanism support device for aircraft formation flight. The parallel mechanism support device includes a frame, aircraft models for formation flight, a plurality of first rope traction assemblies, a plurality of second rope traction assemblies, two guide rail assemblies, and a machine vision camera. The aircraft models are all pulled by ropes and achieve six-degree-of-freedom motion through a parallel mechanism. The parallel mechanism support device not only has high rigidity,good stability, large working space, and can conveniently realize various formation flight of the aircraft models, but also can effectively avoid interference between the traction ropes, interferencebetween the traction ropes and the aircraft models, and interference between the aircraft models and surrounding obstacles. The parallel mechanism support mechanism has little interference on the flowfield around the models, is helpful to simulating the influences of the airflow between the aircraft models for formation flight, and improves the validity and credibility of the wind tunnel test results.

Description

Technical field [0001] The invention relates to the technical field of wind tunnel testing, in particular to a wind tunnel test model parallel mechanism support device used for formation flying of aircraft. Background technique [0002] Wind tunnel test is an important means to obtain aerodynamic parameters of aircraft. The realization of aircraft model formation flying in the wind tunnel has important engineering significance for obtaining the aerodynamic parameters of aircraft formation flying, and has guiding value for aircraft design and formation flying. In the wind tunnel test, not only the influence of the space structure of the surrounding buildings on the formation flight of the aircraft, but also the interference between the model support and the aircraft model, and the interference between several aircraft models need to be considered. In addition to the support mechanism, it is also necessary to be equipped with a complete aerodynamic force and a test system for the ...

AI Technical Summary

Problems solved by technology

The variable structure rope traction parallel robot has the advantages of small interference to the air flow field, diversified test items, large working space, fast response speed, overcoming the disadvantages of traditional hard wind tunnel support methods that destroy the air flow field, simple structure, and easy manufacture and maintenance. , but it is only suitable for wind tunnel tests on a single aircraft model, and does not consider the interference between the model and the traction tether, the model and the surrounding obstacles when the aircraft is flying in formation, and it cannot solve the problem of the tethers supporting several aircraft models. interference problem

Although the model rope support system to realize the virtual flight of the wind tunnel solves the connection problem between the model, the built-in balance and the rope, it is also only suitable for the wind tunnel test of the single aircraft model, and does not consider the model and the traction rope when the aircraft formation flies. The interference between the model and the surrounding obstacles

[0004] In addition, most of the model supports in the prior art are rods or column-type rigid supports, which will not only change the original aerodynamic shape of the aircraft model, but also greatly interfere with the flow field, affecting the accuracy of wind tunnel test results

Images